Libc-1082.50.1.tar.gz

[apple/libc.git] / locale / FreeBSD / big5.c

diff --git a/locale/FreeBSD/big5.c b/locale/FreeBSD/big5.c
index 4bc3cbdc31f93f4b063ace40cdd98f742bd94007..bb3daf0f86e3daf972f0611015678fc3df79eacc 100644 (file)
--- a/locale/FreeBSD/big5.c
+++ b/locale/FreeBSD/big5.c
@@ -1,4 +1,5 @@
 /*-
+ * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved.
  * Copyright (c) 1993
  *     The Regents of the University of California.  All rights reserved.
  *
@@ -38,82 +39,136 @@
 static char sccsid[] = "@(#)big5.c     8.1 (Berkeley) 6/4/93";
 #endif /* LIBC_SCCS and not lint */
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/locale/big5.c,v 1.7 2002/03/22 21:52:18 obrien Exp $");
+__FBSDID("$FreeBSD: src/lib/libc/locale/big5.c,v 1.18 2007/10/13 16:28:21 ache Exp $");
+
+#include "xlocale_private.h"
 
-#include <rune.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
 #include <sys/types.h>
+#include <errno.h>
+#include <runetype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include "mblocal.h"
+
+static size_t  _BIG5_mbrtowc(wchar_t * __restrict, const char * __restrict,
+                   size_t, mbstate_t * __restrict, locale_t);
+static int     _BIG5_mbsinit(const mbstate_t *, locale_t);
+static size_t  _BIG5_wcrtomb(char * __restrict, wchar_t,
+                   mbstate_t * __restrict, locale_t);
 
-rune_t _BIG5_sgetrune(const char *, size_t, char const **);
-int    _BIG5_sputrune(rune_t, char *, size_t, char **);
+typedef struct {
+       wchar_t ch;
+} _BIG5State;
 
 int
-_BIG5_init(rl)
-       _RuneLocale *rl;
+_BIG5_init(struct __xlocale_st_runelocale *xrl)
 {
-       rl->sgetrune = _BIG5_sgetrune;
-       rl->sputrune = _BIG5_sputrune;
-       _CurrentRuneLocale = rl;
-       __mb_cur_max = 2;
+
+       xrl->__mbrtowc = _BIG5_mbrtowc;
+       xrl->__wcrtomb = _BIG5_wcrtomb;
+       xrl->__mbsinit = _BIG5_mbsinit;
+       xrl->__mb_cur_max = 2;
+       xrl->__mb_sb_limit = 128;
        return (0);
 }
 
-static inline int
-_big5_check(c)
-       u_int c;
+static int
+_BIG5_mbsinit(const mbstate_t *ps, locale_t loc __unused)
+{
+
+       return (ps == NULL || ((const _BIG5State *)ps)->ch == 0);
+}
+
+static __inline int
+_big5_check(u_int c)
 {
+
        c &= 0xff;
        return ((c >= 0xa1 && c <= 0xfe) ? 2 : 1);
 }
 
-rune_t
-_BIG5_sgetrune(string, n, result)
-       const char *string;
-       size_t n;
-       char const **result;
+static size_t
+_BIG5_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
+    mbstate_t * __restrict ps, locale_t loc __unused)
 {
-       rune_t rune = 0;
-       int len;
+       _BIG5State *bs;
+       wchar_t wc;
+       size_t len;
+
+       bs = (_BIG5State *)ps;
 
-       if (n < 1 || (len = _big5_check(*string)) > n) {
-               if (result)
-                       *result = string;
-               return (_INVALID_RUNE);
+       if ((bs->ch & ~0xFF) != 0) {
+               /* Bad conversion state. */
+               errno = EINVAL;
+               return ((size_t)-1);
        }
-       while (--len >= 0)
-               rune = (rune << 8) | ((u_int)(*string++) & 0xff);
-       if (result)
-               *result = string;
-       return rune;
-}
 
-int
-_BIG5_sputrune(c, string, n, result)
-       rune_t c;
-       char *string, **result;
-       size_t n;
-{
-       if (c & 0x8000) {
-               if (n >= 2) {
-                       string[0] = (c >> 8) & 0xff;
-                       string[1] = c & 0xff;
-                       if (result)
-                               *result = string + 2;
-                       return (2);
+       if (s == NULL) {
+               s = "";
+               n = 1;
+               pwc = NULL;
+       }
+
+       if (n == 0)
+               /* Incomplete multibyte sequence */
+               return ((size_t)-2);
+
+       if (bs->ch != 0) {
+               if (*s == '\0') {
+                       errno = EILSEQ;
+                       return ((size_t)-1);
                }
+               wc = (bs->ch << 8) | (*s & 0xFF);
+               if (pwc != NULL)
+                       *pwc = wc;
+               bs->ch = 0;
+               return (1);
        }
-       else {
-               if (n >= 1) {
-                       *string = c & 0xff;
-                       if (result)
-                               *result = string + 1;
-                       return (1);
+
+       len = (size_t)_big5_check(*s);
+       wc = *s++ & 0xff;
+       if (len == 2) {
+               if (n < 2) {
+                       /* Incomplete multibyte sequence */
+                       bs->ch = wc;
+                       return ((size_t)-2);
                }
+               if (*s == '\0') {
+                       errno = EILSEQ;
+                       return ((size_t)-1);
+               }
+               wc = (wc << 8) | (*s++ & 0xff);
+               if (pwc != NULL)
+                       *pwc = wc;
+                return (2);
+       } else {
+               if (pwc != NULL)
+                       *pwc = wc;
+               return (wc == L'\0' ? 0 : 1);
        }
-       if (result)
-               *result = string;
-       return (0);
-       
+}
+
+static size_t
+_BIG5_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps, locale_t loc __unused)
+{
+       _BIG5State *bs;
+
+       bs = (_BIG5State *)ps;
+
+       if (bs->ch != 0) {
+               errno = EINVAL;
+               return ((size_t)-1);
+       }
+
+       if (s == NULL)
+               /* Reset to initial shift state (no-op) */
+               return (1);
+       if (wc & 0x8000) {
+               *s++ = (wc >> 8) & 0xff;
+               *s = wc & 0xff;
+               return (2);
+       }
+       *s = wc & 0xff;
+       return (1);
 }